Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 13 |
8.1%
|
1958 | 1 |
0.6%
|
|
1960 | 1 |
0.6%
|
|
1970 | 1 |
0.6%
|
|
1975 | 1 |
0.6%
|
|
1980 | 1 |
0.6%
|
|
1983 | 1 |
0.6%
|
|
1985 | 1 |
0.6%
|
|
1990 | 4 |
2.5%
|
|
1991 | 3 |
1.9%
|
|
1992 | 5 |
3.1%
|
|
1993 | 1 |
0.6%
|
|
1994 | 3 |
1.9%
|
|
1995 | 6 |
3.7%
|
|
1996 | 3 |
1.9%
|
|
1997 | 2 |
1.2%
|
|
1998 | 7 |
4.3%
|
|
1999 | 2 |
1.2%
|
|
2000 | 5 |
3.1%
|
|
2001 | 1 |
0.6%
|
|
2002 | 5 |
3.1%
|
|
2003 | 9 |
5.6%
|
|
2004 | 8 |
5%
|
|
2005 | 7 |
4.3%
|
|
2006 | 5 |
3.1%
|
|
2007 | 7 |
4.3%
|
|
2008 | 7 |
4.3%
|
|
2009 | 5 |
3.1%
|
|
2010 | 8 |
5%
|
|
2011 | 7 |
4.3%
|
|
2012 | 3 |
1.9%
|
|
2013 | 5 |
3.1%
|
|
2014 | 7 |
4.3%
|
|
2015 | 8 |
5%
|
|
2016 | 2 |
1.2%
|
|
2017 | 3 |
1.9%
|
|
2018 | 3 |
1.9%
|
|
Sysmiss | 200 |